fib_semantics.c (d033de5ceee8333e4fee3d59a956244d3736102a) fib_semantics.c (127eb7cd3c210afead788991a30950a9e36759ea)
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * IPv4 Forwarding Information Base: semantics.
7 *
8 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>

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37#include <net/ip.h>
38#include <net/protocol.h>
39#include <net/route.h>
40#include <net/tcp.h>
41#include <net/sock.h>
42#include <net/ip_fib.h>
43#include <net/netlink.h>
44#include <net/nexthop.h>
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * IPv4 Forwarding Information Base: semantics.
7 *
8 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>

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37#include <net/ip.h>
38#include <net/protocol.h>
39#include <net/route.h>
40#include <net/tcp.h>
41#include <net/sock.h>
42#include <net/ip_fib.h>
43#include <net/netlink.h>
44#include <net/nexthop.h>
45#include <net/lwtunnel.h>
45
46#include "fib_lookup.h"
47
48static DEFINE_SPINLOCK(fib_info_lock);
49static struct hlist_head *fib_info_hash;
50static struct hlist_head *fib_info_laddrhash;
51static unsigned int fib_info_hash_size;
52static unsigned int fib_info_cnt;

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203/* Release a nexthop info record */
204static void free_fib_info_rcu(struct rcu_head *head)
205{
206 struct fib_info *fi = container_of(head, struct fib_info, rcu);
207
208 change_nexthops(fi) {
209 if (nexthop_nh->nh_dev)
210 dev_put(nexthop_nh->nh_dev);
46
47#include "fib_lookup.h"
48
49static DEFINE_SPINLOCK(fib_info_lock);
50static struct hlist_head *fib_info_hash;
51static struct hlist_head *fib_info_laddrhash;
52static unsigned int fib_info_hash_size;
53static unsigned int fib_info_cnt;

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204/* Release a nexthop info record */
205static void free_fib_info_rcu(struct rcu_head *head)
206{
207 struct fib_info *fi = container_of(head, struct fib_info, rcu);
208
209 change_nexthops(fi) {
210 if (nexthop_nh->nh_dev)
211 dev_put(nexthop_nh->nh_dev);
212 lwtstate_put(nexthop_nh->nh_lwtstate);
211 free_nh_exceptions(nexthop_nh);
212 rt_fibinfo_free_cpus(nexthop_nh->nh_pcpu_rth_output);
213 rt_fibinfo_free(&nexthop_nh->nh_rth_input);
214 } endfor_nexthops(fi);
215
216 if (fi->fib_metrics != (u32 *) dst_default_metrics)
217 kfree(fi->fib_metrics);
218 kfree(fi);

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261 nh->nh_gw != onh->nh_gw ||
262 nh->nh_scope != onh->nh_scope ||
263#ifdef CONFIG_IP_ROUTE_MULTIPATH
264 nh->nh_weight != onh->nh_weight ||
265#endif
266#ifdef CONFIG_IP_ROUTE_CLASSID
267 nh->nh_tclassid != onh->nh_tclassid ||
268#endif
213 free_nh_exceptions(nexthop_nh);
214 rt_fibinfo_free_cpus(nexthop_nh->nh_pcpu_rth_output);
215 rt_fibinfo_free(&nexthop_nh->nh_rth_input);
216 } endfor_nexthops(fi);
217
218 if (fi->fib_metrics != (u32 *) dst_default_metrics)
219 kfree(fi->fib_metrics);
220 kfree(fi);

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263 nh->nh_gw != onh->nh_gw ||
264 nh->nh_scope != onh->nh_scope ||
265#ifdef CONFIG_IP_ROUTE_MULTIPATH
266 nh->nh_weight != onh->nh_weight ||
267#endif
268#ifdef CONFIG_IP_ROUTE_CLASSID
269 nh->nh_tclassid != onh->nh_tclassid ||
270#endif
271 lwtunnel_cmp_encap(nh->nh_lwtstate, onh->nh_lwtstate) ||
269 ((nh->nh_flags ^ onh->nh_flags) & ~RTNH_COMPARE_MASK))
270 return -1;
271 onh++;
272 } endfor_nexthops(fi);
273 return 0;
274}
275
276static inline unsigned int fib_devindex_hashfn(unsigned int val)

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361 + nla_total_size(4) /* RTA_PRIORITY */
362 + nla_total_size(4) /* RTA_PREFSRC */
363 + nla_total_size(TCP_CA_NAME_MAX); /* RTAX_CC_ALGO */
364
365 /* space for nested metrics */
366 payload += nla_total_size((RTAX_MAX * nla_total_size(4)));
367
368 if (fi->fib_nhs) {
272 ((nh->nh_flags ^ onh->nh_flags) & ~RTNH_COMPARE_MASK))
273 return -1;
274 onh++;
275 } endfor_nexthops(fi);
276 return 0;
277}
278
279static inline unsigned int fib_devindex_hashfn(unsigned int val)

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364 + nla_total_size(4) /* RTA_PRIORITY */
365 + nla_total_size(4) /* RTA_PREFSRC */
366 + nla_total_size(TCP_CA_NAME_MAX); /* RTAX_CC_ALGO */
367
368 /* space for nested metrics */
369 payload += nla_total_size((RTAX_MAX * nla_total_size(4)));
370
371 if (fi->fib_nhs) {
372 size_t nh_encapsize = 0;
369 /* Also handles the special case fib_nhs == 1 */
370
371 /* each nexthop is packed in an attribute */
372 size_t nhsize = nla_total_size(sizeof(struct rtnexthop));
373
374 /* may contain flow and gateway attribute */
375 nhsize += 2 * nla_total_size(4);
376
373 /* Also handles the special case fib_nhs == 1 */
374
375 /* each nexthop is packed in an attribute */
376 size_t nhsize = nla_total_size(sizeof(struct rtnexthop));
377
378 /* may contain flow and gateway attribute */
379 nhsize += 2 * nla_total_size(4);
380
381 /* grab encap info */
382 for_nexthops(fi) {
383 if (nh->nh_lwtstate) {
384 /* RTA_ENCAP_TYPE */
385 nh_encapsize += lwtunnel_get_encap_size(
386 nh->nh_lwtstate);
387 /* RTA_ENCAP */
388 nh_encapsize += nla_total_size(2);
389 }
390 } endfor_nexthops(fi);
391
377 /* all nexthops are packed in a nested attribute */
392 /* all nexthops are packed in a nested attribute */
378 payload += nla_total_size(fi->fib_nhs * nhsize);
393 payload += nla_total_size((fi->fib_nhs * nhsize) +
394 nh_encapsize);
395
379 }
380
381 return payload;
382}
383
384void rtmsg_fib(int event, __be32 key, struct fib_alias *fa,
385 int dst_len, u32 tb_id, const struct nl_info *info,
386 unsigned int nlm_flags)

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416{
417 struct neighbour *n;
418 int state = NUD_NONE;
419
420 n = neigh_lookup(&arp_tbl, &fi->fib_nh[0].nh_gw, fi->fib_dev);
421 if (n) {
422 state = n->nud_state;
423 neigh_release(n);
396 }
397
398 return payload;
399}
400
401void rtmsg_fib(int event, __be32 key, struct fib_alias *fa,
402 int dst_len, u32 tb_id, const struct nl_info *info,
403 unsigned int nlm_flags)

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433{
434 struct neighbour *n;
435 int state = NUD_NONE;
436
437 n = neigh_lookup(&arp_tbl, &fi->fib_nh[0].nh_gw, fi->fib_dev);
438 if (n) {
439 state = n->nud_state;
440 neigh_release(n);
441 } else {
442 return 0;
424 }
425 if (state == NUD_REACHABLE)
426 return 0;
427 if ((state & NUD_VALID) && order != dflt)
428 return 0;
429 if ((state & NUD_VALID) ||
443 }
444 if (state == NUD_REACHABLE)
445 return 0;
446 if ((state & NUD_VALID) && order != dflt)
447 return 0;
448 if ((state & NUD_VALID) ||
430 (*last_idx < 0 && order > dflt)) {
449 (*last_idx < 0 && order > dflt && state != NUD_INCOMPLETE)) {
431 *last_resort = fi;
432 *last_idx = order;
433 }
434 return 1;
435}
436
437#ifdef CONFIG_IP_ROUTE_MULTIPATH
438

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447
448 /* leftover implies invalid nexthop configuration, discard it */
449 return remaining > 0 ? 0 : nhs;
450}
451
452static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh,
453 int remaining, struct fib_config *cfg)
454{
450 *last_resort = fi;
451 *last_idx = order;
452 }
453 return 1;
454}
455
456#ifdef CONFIG_IP_ROUTE_MULTIPATH
457

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466
467 /* leftover implies invalid nexthop configuration, discard it */
468 return remaining > 0 ? 0 : nhs;
469}
470
471static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh,
472 int remaining, struct fib_config *cfg)
473{
474 struct net *net = cfg->fc_nlinfo.nl_net;
475 int ret;
476
455 change_nexthops(fi) {
456 int attrlen;
457
458 if (!rtnh_ok(rtnh, remaining))
459 return -EINVAL;
460
461 nexthop_nh->nh_flags =
462 (cfg->fc_flags & ~0xFF) | rtnh->rtnh_flags;

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470 nla = nla_find(attrs, attrlen, RTA_GATEWAY);
471 nexthop_nh->nh_gw = nla ? nla_get_in_addr(nla) : 0;
472#ifdef CONFIG_IP_ROUTE_CLASSID
473 nla = nla_find(attrs, attrlen, RTA_FLOW);
474 nexthop_nh->nh_tclassid = nla ? nla_get_u32(nla) : 0;
475 if (nexthop_nh->nh_tclassid)
476 fi->fib_net->ipv4.fib_num_tclassid_users++;
477#endif
477 change_nexthops(fi) {
478 int attrlen;
479
480 if (!rtnh_ok(rtnh, remaining))
481 return -EINVAL;
482
483 nexthop_nh->nh_flags =
484 (cfg->fc_flags & ~0xFF) | rtnh->rtnh_flags;

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492 nla = nla_find(attrs, attrlen, RTA_GATEWAY);
493 nexthop_nh->nh_gw = nla ? nla_get_in_addr(nla) : 0;
494#ifdef CONFIG_IP_ROUTE_CLASSID
495 nla = nla_find(attrs, attrlen, RTA_FLOW);
496 nexthop_nh->nh_tclassid = nla ? nla_get_u32(nla) : 0;
497 if (nexthop_nh->nh_tclassid)
498 fi->fib_net->ipv4.fib_num_tclassid_users++;
499#endif
500 nla = nla_find(attrs, attrlen, RTA_ENCAP);
501 if (nla) {
502 struct lwtunnel_state *lwtstate;
503 struct net_device *dev = NULL;
504 struct nlattr *nla_entype;
505
506 nla_entype = nla_find(attrs, attrlen,
507 RTA_ENCAP_TYPE);
508 if (!nla_entype)
509 goto err_inval;
510 if (cfg->fc_oif)
511 dev = __dev_get_by_index(net, cfg->fc_oif);
512 ret = lwtunnel_build_state(dev, nla_get_u16(
513 nla_entype),
514 nla, AF_INET, cfg,
515 &lwtstate);
516 if (ret)
517 goto errout;
518 nexthop_nh->nh_lwtstate =
519 lwtstate_get(lwtstate);
520 }
478 }
479
480 rtnh = rtnh_next(rtnh, &remaining);
481 } endfor_nexthops(fi);
482
483 return 0;
521 }
522
523 rtnh = rtnh_next(rtnh, &remaining);
524 } endfor_nexthops(fi);
525
526 return 0;
527
528err_inval:
529 ret = -EINVAL;
530
531errout:
532 return ret;
484}
485
486#endif
487
533}
534
535#endif
536
537static int fib_encap_match(struct net *net, u16 encap_type,
538 struct nlattr *encap,
539 int oif, const struct fib_nh *nh,
540 const struct fib_config *cfg)
541{
542 struct lwtunnel_state *lwtstate;
543 struct net_device *dev = NULL;
544 int ret, result = 0;
545
546 if (encap_type == LWTUNNEL_ENCAP_NONE)
547 return 0;
548
549 if (oif)
550 dev = __dev_get_by_index(net, oif);
551 ret = lwtunnel_build_state(dev, encap_type, encap,
552 AF_INET, cfg, &lwtstate);
553 if (!ret) {
554 result = lwtunnel_cmp_encap(lwtstate, nh->nh_lwtstate);
555 lwtstate_free(lwtstate);
556 }
557
558 return result;
559}
560
488int fib_nh_match(struct fib_config *cfg, struct fib_info *fi)
489{
561int fib_nh_match(struct fib_config *cfg, struct fib_info *fi)
562{
563 struct net *net = cfg->fc_nlinfo.nl_net;
490#ifdef CONFIG_IP_ROUTE_MULTIPATH
491 struct rtnexthop *rtnh;
492 int remaining;
493#endif
494
495 if (cfg->fc_priority && cfg->fc_priority != fi->fib_priority)
496 return 1;
497
498 if (cfg->fc_oif || cfg->fc_gw) {
564#ifdef CONFIG_IP_ROUTE_MULTIPATH
565 struct rtnexthop *rtnh;
566 int remaining;
567#endif
568
569 if (cfg->fc_priority && cfg->fc_priority != fi->fib_priority)
570 return 1;
571
572 if (cfg->fc_oif || cfg->fc_gw) {
573 if (cfg->fc_encap) {
574 if (fib_encap_match(net, cfg->fc_encap_type,
575 cfg->fc_encap, cfg->fc_oif,
576 fi->fib_nh, cfg))
577 return 1;
578 }
499 if ((!cfg->fc_oif || cfg->fc_oif == fi->fib_nh->nh_oif) &&
500 (!cfg->fc_gw || cfg->fc_gw == fi->fib_nh->nh_gw))
501 return 0;
502 return 1;
503 }
504
505#ifdef CONFIG_IP_ROUTE_MULTIPATH
506 if (!cfg->fc_mp)

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580 * |
581 * |-> {link prefix} -> (gw, oif) [scope local]
582 * |
583 * |-> {local prefix} (terminal node)
584 */
585static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
586 struct fib_nh *nh)
587{
579 if ((!cfg->fc_oif || cfg->fc_oif == fi->fib_nh->nh_oif) &&
580 (!cfg->fc_gw || cfg->fc_gw == fi->fib_nh->nh_gw))
581 return 0;
582 return 1;
583 }
584
585#ifdef CONFIG_IP_ROUTE_MULTIPATH
586 if (!cfg->fc_mp)

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660 * |
661 * |-> {link prefix} -> (gw, oif) [scope local]
662 * |
663 * |-> {local prefix} (terminal node)
664 */
665static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
666 struct fib_nh *nh)
667{
588 int err;
668 int err = 0;
589 struct net *net;
590 struct net_device *dev;
591
592 net = cfg->fc_nlinfo.nl_net;
593 if (nh->nh_gw) {
594 struct fib_result res;
595
596 if (nh->nh_flags & RTNH_F_ONLINK) {
669 struct net *net;
670 struct net_device *dev;
671
672 net = cfg->fc_nlinfo.nl_net;
673 if (nh->nh_gw) {
674 struct fib_result res;
675
676 if (nh->nh_flags & RTNH_F_ONLINK) {
677 unsigned int addr_type;
597
598 if (cfg->fc_scope >= RT_SCOPE_LINK)
599 return -EINVAL;
678
679 if (cfg->fc_scope >= RT_SCOPE_LINK)
680 return -EINVAL;
600 if (inet_addr_type(net, nh->nh_gw) != RTN_UNICAST)
601 return -EINVAL;
602 dev = __dev_get_by_index(net, nh->nh_oif);
603 if (!dev)
604 return -ENODEV;
605 if (!(dev->flags & IFF_UP))
606 return -ENETDOWN;
681 dev = __dev_get_by_index(net, nh->nh_oif);
682 if (!dev)
683 return -ENODEV;
684 if (!(dev->flags & IFF_UP))
685 return -ENETDOWN;
686 addr_type = inet_addr_type_dev_table(net, dev, nh->nh_gw);
687 if (addr_type != RTN_UNICAST)
688 return -EINVAL;
607 if (!netif_carrier_ok(dev))
608 nh->nh_flags |= RTNH_F_LINKDOWN;
609 nh->nh_dev = dev;
610 dev_hold(dev);
611 nh->nh_scope = RT_SCOPE_LINK;
612 return 0;
613 }
614 rcu_read_lock();
615 {
689 if (!netif_carrier_ok(dev))
690 nh->nh_flags |= RTNH_F_LINKDOWN;
691 nh->nh_dev = dev;
692 dev_hold(dev);
693 nh->nh_scope = RT_SCOPE_LINK;
694 return 0;
695 }
696 rcu_read_lock();
697 {
698 struct fib_table *tbl = NULL;
616 struct flowi4 fl4 = {
617 .daddr = nh->nh_gw,
618 .flowi4_scope = cfg->fc_scope + 1,
619 .flowi4_oif = nh->nh_oif,
620 .flowi4_iif = LOOPBACK_IFINDEX,
621 };
622
623 /* It is not necessary, but requires a bit of thinking */
624 if (fl4.flowi4_scope < RT_SCOPE_LINK)
625 fl4.flowi4_scope = RT_SCOPE_LINK;
699 struct flowi4 fl4 = {
700 .daddr = nh->nh_gw,
701 .flowi4_scope = cfg->fc_scope + 1,
702 .flowi4_oif = nh->nh_oif,
703 .flowi4_iif = LOOPBACK_IFINDEX,
704 };
705
706 /* It is not necessary, but requires a bit of thinking */
707 if (fl4.flowi4_scope < RT_SCOPE_LINK)
708 fl4.flowi4_scope = RT_SCOPE_LINK;
626 err = fib_lookup(net, &fl4, &res,
627 FIB_LOOKUP_IGNORE_LINKSTATE);
709
710 if (cfg->fc_table)
711 tbl = fib_get_table(net, cfg->fc_table);
712
713 if (tbl)
714 err = fib_table_lookup(tbl, &fl4, &res,
715 FIB_LOOKUP_IGNORE_LINKSTATE |
716 FIB_LOOKUP_NOREF);
717
718 /* on error or if no table given do full lookup. This
719 * is needed for example when nexthops are in the local
720 * table rather than the given table
721 */
722 if (!tbl || err) {
723 err = fib_lookup(net, &fl4, &res,
724 FIB_LOOKUP_IGNORE_LINKSTATE);
725 }
726
628 if (err) {
629 rcu_read_unlock();
630 return err;
631 }
632 }
633 err = -EINVAL;
634 if (res.type != RTN_UNICAST && res.type != RTN_LOCAL)
635 goto out;

--- 119 unchanged lines hidden (view full) ---

755 nh->nh_saddr = inet_select_addr(nh->nh_dev,
756 nh->nh_gw,
757 nh->nh_parent->fib_scope);
758 nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid);
759
760 return nh->nh_saddr;
761}
762
727 if (err) {
728 rcu_read_unlock();
729 return err;
730 }
731 }
732 err = -EINVAL;
733 if (res.type != RTN_UNICAST && res.type != RTN_LOCAL)
734 goto out;

--- 119 unchanged lines hidden (view full) ---

854 nh->nh_saddr = inet_select_addr(nh->nh_dev,
855 nh->nh_gw,
856 nh->nh_parent->fib_scope);
857 nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid);
858
859 return nh->nh_saddr;
860}
861
862static bool fib_valid_prefsrc(struct fib_config *cfg, __be32 fib_prefsrc)
863{
864 if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst ||
865 fib_prefsrc != cfg->fc_dst) {
866 int tb_id = cfg->fc_table;
867
868 if (tb_id == RT_TABLE_MAIN)
869 tb_id = RT_TABLE_LOCAL;
870
871 if (inet_addr_type_table(cfg->fc_nlinfo.nl_net,
872 fib_prefsrc, tb_id) != RTN_LOCAL) {
873 return false;
874 }
875 }
876 return true;
877}
878
763struct fib_info *fib_create_info(struct fib_config *cfg)
764{
765 int err;
766 struct fib_info *fi = NULL;
767 struct fib_info *ofi;
768 int nhs = 1;
769 struct net *net = cfg->fc_nlinfo.nl_net;
770

--- 106 unchanged lines hidden (view full) ---

877 goto err_inval;
878#endif
879#else
880 goto err_inval;
881#endif
882 } else {
883 struct fib_nh *nh = fi->fib_nh;
884
879struct fib_info *fib_create_info(struct fib_config *cfg)
880{
881 int err;
882 struct fib_info *fi = NULL;
883 struct fib_info *ofi;
884 int nhs = 1;
885 struct net *net = cfg->fc_nlinfo.nl_net;
886

--- 106 unchanged lines hidden (view full) ---

993 goto err_inval;
994#endif
995#else
996 goto err_inval;
997#endif
998 } else {
999 struct fib_nh *nh = fi->fib_nh;
1000
1001 if (cfg->fc_encap) {
1002 struct lwtunnel_state *lwtstate;
1003 struct net_device *dev = NULL;
1004
1005 if (cfg->fc_encap_type == LWTUNNEL_ENCAP_NONE)
1006 goto err_inval;
1007 if (cfg->fc_oif)
1008 dev = __dev_get_by_index(net, cfg->fc_oif);
1009 err = lwtunnel_build_state(dev, cfg->fc_encap_type,
1010 cfg->fc_encap, AF_INET, cfg,
1011 &lwtstate);
1012 if (err)
1013 goto failure;
1014
1015 nh->nh_lwtstate = lwtstate_get(lwtstate);
1016 }
885 nh->nh_oif = cfg->fc_oif;
886 nh->nh_gw = cfg->fc_gw;
887 nh->nh_flags = cfg->fc_flags;
888#ifdef CONFIG_IP_ROUTE_CLASSID
889 nh->nh_tclassid = cfg->fc_flow;
890 if (nh->nh_tclassid)
891 fi->fib_net->ipv4.fib_num_tclassid_users++;
892#endif

--- 42 unchanged lines hidden (view full) ---

935 goto failure;
936 if (nexthop_nh->nh_flags & RTNH_F_LINKDOWN)
937 linkdown++;
938 } endfor_nexthops(fi)
939 if (linkdown == fi->fib_nhs)
940 fi->fib_flags |= RTNH_F_LINKDOWN;
941 }
942
1017 nh->nh_oif = cfg->fc_oif;
1018 nh->nh_gw = cfg->fc_gw;
1019 nh->nh_flags = cfg->fc_flags;
1020#ifdef CONFIG_IP_ROUTE_CLASSID
1021 nh->nh_tclassid = cfg->fc_flow;
1022 if (nh->nh_tclassid)
1023 fi->fib_net->ipv4.fib_num_tclassid_users++;
1024#endif

--- 42 unchanged lines hidden (view full) ---

1067 goto failure;
1068 if (nexthop_nh->nh_flags & RTNH_F_LINKDOWN)
1069 linkdown++;
1070 } endfor_nexthops(fi)
1071 if (linkdown == fi->fib_nhs)
1072 fi->fib_flags |= RTNH_F_LINKDOWN;
1073 }
1074
943 if (fi->fib_prefsrc) {
944 if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst ||
945 fi->fib_prefsrc != cfg->fc_dst)
946 if (inet_addr_type(net, fi->fib_prefsrc) != RTN_LOCAL)
947 goto err_inval;
948 }
1075 if (fi->fib_prefsrc && !fib_valid_prefsrc(cfg, fi->fib_prefsrc))
1076 goto err_inval;
949
950 change_nexthops(fi) {
951 fib_info_update_nh_saddr(net, nexthop_nh);
952 } endfor_nexthops(fi)
953
954link_it:
955 ofi = fib_find_info(fi);
956 if (ofi) {

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1050 IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev))
1051 rtm->rtm_flags |= RTNH_F_DEAD;
1052 }
1053#ifdef CONFIG_IP_ROUTE_CLASSID
1054 if (fi->fib_nh[0].nh_tclassid &&
1055 nla_put_u32(skb, RTA_FLOW, fi->fib_nh[0].nh_tclassid))
1056 goto nla_put_failure;
1057#endif
1077
1078 change_nexthops(fi) {
1079 fib_info_update_nh_saddr(net, nexthop_nh);
1080 } endfor_nexthops(fi)
1081
1082link_it:
1083 ofi = fib_find_info(fi);
1084 if (ofi) {

--- 93 unchanged lines hidden (view full) ---

1178 IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev))
1179 rtm->rtm_flags |= RTNH_F_DEAD;
1180 }
1181#ifdef CONFIG_IP_ROUTE_CLASSID
1182 if (fi->fib_nh[0].nh_tclassid &&
1183 nla_put_u32(skb, RTA_FLOW, fi->fib_nh[0].nh_tclassid))
1184 goto nla_put_failure;
1185#endif
1186 if (fi->fib_nh->nh_lwtstate)
1187 lwtunnel_fill_encap(skb, fi->fib_nh->nh_lwtstate);
1058 }
1059#ifdef CONFIG_IP_ROUTE_MULTIPATH
1060 if (fi->fib_nhs > 1) {
1061 struct rtnexthop *rtnh;
1062 struct nlattr *mp;
1063
1064 mp = nla_nest_start(skb, RTA_MULTIPATH);
1065 if (!mp)

--- 19 unchanged lines hidden (view full) ---

1085 if (nh->nh_gw &&
1086 nla_put_in_addr(skb, RTA_GATEWAY, nh->nh_gw))
1087 goto nla_put_failure;
1088#ifdef CONFIG_IP_ROUTE_CLASSID
1089 if (nh->nh_tclassid &&
1090 nla_put_u32(skb, RTA_FLOW, nh->nh_tclassid))
1091 goto nla_put_failure;
1092#endif
1188 }
1189#ifdef CONFIG_IP_ROUTE_MULTIPATH
1190 if (fi->fib_nhs > 1) {
1191 struct rtnexthop *rtnh;
1192 struct nlattr *mp;
1193
1194 mp = nla_nest_start(skb, RTA_MULTIPATH);
1195 if (!mp)

--- 19 unchanged lines hidden (view full) ---

1215 if (nh->nh_gw &&
1216 nla_put_in_addr(skb, RTA_GATEWAY, nh->nh_gw))
1217 goto nla_put_failure;
1218#ifdef CONFIG_IP_ROUTE_CLASSID
1219 if (nh->nh_tclassid &&
1220 nla_put_u32(skb, RTA_FLOW, nh->nh_tclassid))
1221 goto nla_put_failure;
1222#endif
1223 if (nh->nh_lwtstate)
1224 lwtunnel_fill_encap(skb, nh->nh_lwtstate);
1093 /* length of rtnetlink header + attributes */
1094 rtnh->rtnh_len = nlmsg_get_pos(skb) - (void *) rtnh;
1095 } endfor_nexthops(fi);
1096
1097 nla_nest_end(skb, mp);
1098 }
1099#endif
1100 nlmsg_end(skb, nlh);

--- 300 unchanged lines hidden --- 		1225 /* length of rtnetlink header + attributes */
1226 rtnh->rtnh_len = nlmsg_get_pos(skb) - (void *) rtnh;
1227 } endfor_nexthops(fi);
1228
1229 nla_nest_end(skb, mp);
1230 }
1231#endif
1232 nlmsg_end(skb, nlh);

--- 300 unchanged lines hidden ---